Unite



NITE t oat MAX Elllll DEJONGE, OF

STAPLE'ION, NEXV YORK.

ANTI-CORROSIVE AND ANTl-FOULING COMPOUND.

SPEdIFICATION forming part of Letters Patent No. 457,342, dated August 11, 1891.

Applicaticn filed April 4, 1890. Serial No. 346,599. (No specimens.)

to p'rovidean anti-corrosive and an ti-foulingcompound for coating objects, and particularly ships hulls, to prevent corrosion and adherence of marine vegetable and animal growth,

which compound may be applied to any sur- :5 face, will harden rapidly, and may be easily softened again for repairs or to unite with new portions which are added to replace that worn or accidentally scraped off in any manner.

ln carrying out my invention I employ what is commonly known in the arts as zinc-dust, a product resulting from the distillation of zinc ores usually collected from the fines of the retorts, the base or body of the com- 25 pound; and to unite and bind the. particles firmly together in a homogeneous mass I employ paraffine-wax, by which itwill be under stood that I mean a parafiine which forms a solid at ordinary atmospheric temperature 0 and includes ozocerite, ceresine, the.

The zinc-dust is preferably screened very finely, and the proportions employed are six parts, by weight, of zinc-dust to one parhby weight, of paraffine, the same being combined by heat and agitation, if found necessary. \Vhen hot the compound is a plastic mass, which may be applied to the surfaces to be I protected by means of a b0X-trowelthat is, a

trowel adapted to carry quite a quantity of 40 the mass and apply it to the surface to be protected in a thin sheet, say from one-sixteenth to one-eighth of an inch thick, and when 'cooled to the atmospheric temperature it will be found to ;5 tightly to the surface to which it is applied. The series of strips applied with the trowel 'behard. and adhere Very are joined together eradicated by means of a heated roundingtool which is passed over the same. This method may be employed to patch or mend the surface should it become damaged, and if no fresh supply of the compound is on hand that already on the surface maybe spread to cover the damaged portion.

I am aware that paraffine has heretofore been employed as a basis of composition,

but I do not claim such use of the same, as I employ only a sufficient quantity of parafiine to form an effective bindenand'in effect the 'zinc-dust is simply saturated with the hot paraffine.

I am also aware that zinc-dust has heretofore been employed as a paint pigment, being held in suspension in a tenacious drying-oil; and I make ,no claim to such use of the same, my invention being quite different therefrom, ,in that the paraffine when fluid will not hold the zinc-dust in suspension, and a sufficient quantity only is employed to form a plastic mass when heated and when cold gives a metallic surface finish, whichcannot be obtained with a paint such as just mentioned.

Having thus described my invention, what I claim as new is 1. The herein-described anti-corrosive antifouling compound, formed of a body of zincdust, to which a sufficient quantity of paraffinc-wax is added to form a binder and not a vehicle, the compound forminga plastic mass under the in fiuence of heat and a hard and practically dry compound when cold, allsnbstantially as and for the purposes set forth.

2. The herein-described anti-corrosive antifouling compound, consisting of zine-dust six parts and paraffme one part, by weight, comand for the purposes set forth.

and all irregularities 7 bined by heat, substantially in the manner 1 

